64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* 25 july 2014 */
|
|
|
|
#include "winapi_windows.h"
|
|
#include "_cgo_export.h"
|
|
|
|
/* provided for cgo's benefit */
|
|
LPWSTR xWC_TABCONTROL = WC_TABCONTROL;
|
|
|
|
static LRESULT CALLBACK tabSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR id, DWORD_PTR data)
|
|
{
|
|
NMHDR *nmhdr = (NMHDR *) lParam;
|
|
LRESULT r;
|
|
|
|
switch (uMsg) {
|
|
case msgNOTIFY:
|
|
switch (nmhdr->code) {
|
|
case TCN_SELCHANGING:
|
|
r = SendMessageW(hwnd, TCM_GETCURSEL, 0, 0);
|
|
if (r == (LRESULT) -1) /* no tab currently selected */
|
|
return FALSE;
|
|
tabChanging((void *) data, r);
|
|
return FALSE; /* allow change */
|
|
case TCN_SELCHANGE:
|
|
tabChanged((void *) data, SendMessageW(hwnd, TCM_GETCURSEL, 0, 0));
|
|
return 0;
|
|
}
|
|
return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
|
|
case WM_NCDESTROY:
|
|
if ((*fv_RemoveWindowSubclass)(hwnd, tabSubProc, id) == FALSE)
|
|
xpanic("error removing Tab subclass (which was for its own event handler)", GetLastError());
|
|
return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
|
|
default:
|
|
return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
|
|
}
|
|
xmissedmsg("Tab", "tabSubProc()", uMsg);
|
|
return 0; /* unreached */
|
|
}
|
|
|
|
void setTabSubclass(HWND hwnd, void *data)
|
|
{
|
|
if ((*fv_SetWindowSubclass)(hwnd, tabSubProc, 0, (DWORD_PTR) data) == FALSE)
|
|
xpanic("error subclassing Tab to give it its own event handler", GetLastError());
|
|
}
|
|
|
|
void tabAppend(HWND hwnd, LPWSTR name)
|
|
{
|
|
TCITEM item;
|
|
LRESULT n;
|
|
|
|
ZeroMemory(&item, sizeof (TCITEM));
|
|
item.mask = TCIF_TEXT;
|
|
item.pszText = name;
|
|
/* MSDN's example code uses the first invalid index directly for this */
|
|
n = SendMessageW(hwnd, TCM_GETITEMCOUNT, 0, 0);
|
|
if (SendMessageW(hwnd, TCM_INSERTITEM, (WPARAM) n, (LPARAM) (&item)) == (LRESULT) -1)
|
|
xpanic("error adding tab to Tab", GetLastError());
|
|
}
|
|
|
|
void tabGetContentRect(HWND hwnd, RECT *r)
|
|
{
|
|
/* not &r; already a pointer (thanks MindChild in irc.efnet.net/#winprog for spotting my failure) */
|
|
SendMessageW(hwnd, TCM_ADJUSTRECT, FALSE, (LPARAM) r);
|
|
}
|